A family of Microsoft word processing software products for creating web, email, and print documents.
To convert numbers to text, run this line of VBA code before you remove number formatting from your heading styles:
ActiveDocument.ConvertNumbersToText
You can run the code directly in the Visual Basic Editor. To display the editor, you can click Visual Basic on the Developer tab. If you can't see that tab, first display it by clicking "Developer" at File | Options | Customize Ribbon.
In the Visual Basic Editor, you can type in the code in the Immediate window and press Enter to run it.